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sql查詢出現次數最多的記錄的名稱和現次數以及QT聚合查找失敗解決

時間：2021-06-29 15:16:05 阅读：0 評論：0 收藏：0 [點我收藏+]

標簽：聚合失敗 image 數據庫sql 知識 desc 排序 com 時間

最近在做一个qt项目，數據庫SQL语句这东西，有段時間没用了，然后就会遗忘某些知識。比如聚合查找。

sql查詢出現次數最多的記錄的名稱和現次數
有一個表：client

技术图片
需求：查找表中出現次數最多的藥品mno名稱，和最高銷量（出現次數）

1.最高銷量：(排序默認是升序，降序要加DESC)
select cname,count(*) as counts
from client
group by cname
order by counts desc

sql查詢出現次數最多的記錄的名稱和現次數以及QT聚合查找失敗解決

標簽：聚合失敗 image 數據庫sql 知識 desc 排序 com 時間

原文地址：https://www.cnblogs.com/ZZS-DYL/p/14945399.html

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